Power-transmitter.



No. 700,532. Pat e'nted May 20, I902.

s. MILLER.

Powan TRANSMITTER.

(Application filed Mar. 5, 1902.) (No Model.)

WITNESSES:

m: uonms PETERS 00.. momlfrlo v, wunmnmu. u c.

' UN TED STATE PATENT].()FFICE?;

SAMUEL MILLER, on NEW YORIQN. IY',

. VPOWIERJTRANSIIVIIITTER.

srEcIFIcA'rIon forming part of Letters Patent No. 700,532, dated May 20, 1902;

Application tiled March 5, 1902. Serial lie. 96,825. (No model.)

T0 at whom it may concern/. v v

Be it known that I, SAMUEL MILLER, a citizen of the United States, and a resident of the borough of Manhattan, in the city,county,and State of New York, haveinvented certain new and useful Improvements in Power-Transmitings, forming a part thereof. 1 j v I My invention relates to improvementsin mechanisms for transmitting'power from a continuously-revolving driving-shaft to sew;

ing or other machines, whichare adapted toi be connected to or disconnected therefrom at will. In devices of this kind it is desirable,

' among other things,toh ave the top of theworktable entirely free fromj machineryjormechanism which would interfere withor belikely to soil the material operated upon. By means of the combinations and parts hereinafter specifically pointedlout I have produced a transmitter which not only'possessesthis desirable feature, but which is cheap to con struct, easy to install, which requiresa mini- -mum amount of power to operate, an'd which is at all times positive and certain in its operation.

In the accompanyingdrawings, Figure 1 is": l a front elevation; Fig.2, a vertical view of the transmitting-shaft, bearings, 850.; and

'Fig. 3 is a detail view showing the construetion of the main or driving disk.

The same reference-letters indicate like parts in all the views.

A represents a portion of the power-table,

B being one of the standards-thereof.

0 represents in outline a'sewing or other machine adapted to be periodically'connected to the source of power. v

D is the main power-shaft, upon which is;

secured in sucha;manner as to rotate there-' with the disk d. The disk d is composed of in proper position.

ais a U-shaped frame adapted to bebolted or secured by other suitable ineans to the ings e of the transmitter-shaft'E.

also passes through'a wedge faced'block b, to

standard B. The ends of the frame are forked, as at a,-and are adapted toreceive the-bears The transmitter-shaft revolving freely'in its bearings which is secured a guiderod 17', passing through a-brace b securedto the frame (It and also passing through the frame Ct and table-standardB and a spring 17 disposed between the wedge-face'd block b, and brace 12 tends to force the blockand accompanying shaft outwardly, while the rod 7), having but a longitudinal sliding motion, allows only the same amount of movement toeach end of the transmitter-shaft,and thu's prevents any tendency to bind or to becomedisplaced. Upon "the ends of the transmitter-shaft are secured 1 the frictioncontact-wheelscand '0 the con- I tact-surfaces of which are provided with any suitable fi'iction material-suchfas leather, rubber, or the like. 'l Vhen in operation, the

wheel 0 is adapted'to contact withand be operated by the disk d, while the wheel e is adapted to contact with and operatethe disk faced pulley f, mounted-insuitable hearings .to the under side of the table andconnected' by'a belt f to the driving-wheel of'the ma-- Ichine.

Tame under side of thetable is secured the;

frame F, in which is rnounted the vertical sliding block g, to which is secured the cam g, The block g slides vertically in the frame -.F and carries a rod fz on which is a spring 'ffibearing against across-piece in the frame, and anut on the rod tendsto force the block 9 and cam g upwardly. A rod 9 attached to the wedge g, carries a friction device g at its end, which is adapted,when moved up wardly, to contact with the pulley f and retard its movement; The sliding block-g is connected by any suitable means, such as the link-h, with the treadle H.

' From the foregoing specification the opera tion of the device will becbvious, When in nor m al position, the spring f keeps the block .9 in its highest ositi n; and, epamt f t of contact with the block b} -Th'e spring 11 forcesthe transmitter-shaft, bearings, &c., outwardly, and the friction-wheels c c are thus out of contact with the disk-pulleys f and disk d. The main shaft and diskvrotate Ioo continuously, while the machine on the table is now at rest, the friction device g tending to prevent any rotation of pulleyf. When the treadle H is depressed, the block 9 and cam g are forced downward, the cam g bears against the block b and forces the transmittershaft laterally, and thus forces the frictionwheels 011 the transmittershaft in contact with the'disk and pulley. Motion is thus imparted to the machine from the main shaft, the friction device g being withdrawn from operation and permitting the pulleyf to rotate freely. It will be observed that the movement of the treadle is comparatively large when compared with the lateral movement of the transmitter-shaft and accompanying mechanisms owing to the small degree of inclination of the cam-surfaces of b and 9. For this reason very little pressure is necessary to force the friction-wheels into contact with the cooperating disks. By constructing the disks d of two pieces it may be applied to a driving-shaft without necessitating the removal of the shaft from the table, which in many cases would be very undesirable.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A power-transmitter comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings, frictionwheels on said shaft, a wedge-faced block connected to and movable with said shaft, a cam adapted to cooperate with the wedge-faced block, and means for moving the cam whereby the transmitter-shaft is moved laterally and the friction-wheels brought into contact with the driving and driven disks, substantially as described.

2. A power-transmitter comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings, frictionwheels on said shaft, a wedge-faced block connected to and movable with said shaft, a cam adapted to cooperate with the wedge-faced block, a friction device connected to and opcrating with said cam, and means for moving the cam whereby the transmittershaft is moved laterally and the friction wheels brought into contact with the driving and driven disks substantially as described.

3. A power-transmitter comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings, a U -shaped frame provided with forked or Y-shaped ends, within which the said bearings move, friction wheels on said shaft, a wedge faced block connected to and movable with said shaft, a cam adapted to cooperate with the wed ge-faced block, and means for moving the cam whereby the transmitter-shaft is moved laterally and the friction-Wheels brought into contact with the driving and driven disks substantially as described.

4. A power-transmitter comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings,a U-shaped frame provided with forked or Y-shaped ends, within which the said bearings move, friction -wheels on said shaft, a Wedgefaced block connected to and movable with said shaft, a cam adapted to cooperate with the wedge-faced block, a friction device connected to and operating with said cam, and means for moving the cam whereby the transmitter- .shaft is moved laterally and the frictionwheels brought into contact with the driving and driven disks substantially as described.

5. A power-transmitter comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings, frictionwheels on said shaft, a wedge-faced block connected to and movable with said shaft, a cam adapted to cooperate with the wedgefaced block, a rod connected to said cam and provided with a brake apparatus adapted to cooperate with the driven disk, and means for moving the cam and brake whereby the transmitter-shaft is moved laterally and the friction-wheels brought into contact with the driving and driven disks and the brake withdrawn, substantially as described.

-6. A power-transmitterlocated entirely below the work-table, comprising a di'ivingdisk, a driven disk, a transmitter-shaft provided with movable bearings, friction wheels on said shaft, a wedge-faced block connected to and movable with said shaft, a cam adapted to cooperate with the wedge-faced block, a braking device connected to and operating with said cam, means for moving the cam whereby the transmitter-shaft is shifted laterally and the friction-wheels brought into contact with the driving and driven disks, and means connecting the driven disk with a sewing-machine,substantially as described.

7. A power-transmitter located entirely below the work-table,comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings,a U -shaped frame provided with forked or Y-shaped ends, within which the said bearings move,friction-wheels on said shaft,a wedge-faced block connected to and movable with said shaft, a cam adapted to cooperate with the wedge-faced block, means for moving the cam whereby the transmittershaft is shifted and the friction-wheels brought into contact with the driving and driven disks, and means connecting the driven disk with the sewing-machine, substantially as described.

. 8. A power-transmitter comprising a driving-disk, a driven disk, a transmitter-shaft provided with movable bearings, a U-shaped frame provided with forked or Y-shaped ends, within which the said bearings move, friction wheels on said shaft, a wedge faced block connected to and movable with said shaft, a cam adapted to cooperate with the wedge-faced block, a rod connected to said cam and provided with a brake apparatus adapted to cooperate with the driven disk,

and means for moving the emu-and brake fixed mysignaturein the presenceofi two wit.- whereby the transmitter-shaft ismoved latnesses.-- I Y erally and the friction-wheels brought into contact with the driving and driven disks 5 and the brake withdrawn, substantially as Witnesses: v

described. SIGMOND SEILLE,'

In testimonywhereof I have hereunto af- JAMES E. OARRAHER. I

SAMUEL "MILLER? 

